<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script type="text/javascript" src="/js/common.js" ></script>
</head>
<body>
<span id="cardNumber">1234322342342423424324243</span>
<script>
    var str=document.getElementById("cardNumber");
    StrYanMa(str);
</script>
</body>
</html>